Chinese medicament for reducing blood sugar and preparation method thereof
A technology for lowering blood sugar and drugs, which is applied in the field of research and development of new traditional Chinese medicines, and achieves the effect of low cost and simple preparation process
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Embodiment 1
[0029] Embodiment 1: the preparation method of oak leaf effective component
[0030] Weigh 5 kg of medicinal materials, extract the medicinal materials with 10 times the amount of medicinal materials, reflux extraction three times, each time for 1 hour, combine the three extracts, filter the extracts, concentrate to dryness, and obtain 210 g of samples. After the sample is dissolved, perform the α-naphthol test (Molish) reaction: take 1ml of the solution, add 1 drop of 10% α-naphthol alcohol solution, shake well, slowly add concentrated H along the tube wall 2 SO 4 10 drops, without shaking, observe that there is a purple cup between the two liquid interfaces, indicating the presence of sugars and glycosides; use TLC (thin layer chromatography) to identify (developing agent: n-BuOH: HAc: H 2 O=4:1:5, V / V), dark spot at 254nm, FeCl 3Solution spraying, obvious dark blue spot; Embodiment 2: the preparation method of effective component of oak leaf
Embodiment 2
[0031] Weigh 5 kg of medicinal materials, extract the medicinal materials with 10 times the amount of medicinal materials and 95% ethanol, reflux extraction three times, each time for 1 hour, combine the three extracts, filter the extracts, concentrate to dryness, and obtain 143 g of samples. After the sample is dissolved, perform the α-naphthol test (Molish) reaction: take 1ml of the solution, add 1 drop of 10% α-naphthol alcohol solution, shake well, slowly add concentrated H along the tube wall 2 SO 4 10 drops, without shaking, observe the purple-red cup between the two liquid interfaces, indicating the presence of sugar and glycoside components; use TLC (thin layer chromatography) to identify (developing agent: CHCl 3 :MeOH=9:1, V / V)), there are dark spots at 254nm, sprayed with vanillin-sulfuric acid solution, and then heated, dark red spots appear.
Embodiment 3
[0032] Embodiment 3: the preparation method of oak leaf effective component
[0033] Weigh 5kg of medicinal materials, extract the medicinal materials with 10 times the amount of medicinal materials, reflux extraction three times, each time for 1 hour, combine the three extracts, filter the extracts, load the sample on 5kg of D101 macroporous resin, flow rate 15ml / min, After sample loading, eluted with water until the eluent was nearly colorless, shared 50 liters of water, eluted with 20% ethanol until the eluent was nearly colorless, eluted 40 liters, and eluted with 50% ethanol until the eluent was nearly Colorless, 40 liters were eluted, 80% ethanol was eluted until the eluate was nearly colorless, 30 liters were eluted, and finally 30 liters were eluted with 95% ethanol. Concentrate, dry, and collect samples. The sample weights obtained after concentration of each eluate were 2.60 g, 157.5 g, 22.40 g, 4.60 g and 3.7 g, respectively. After the sample is dissolved, perform...
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